Coke-oven-door-operating apparatus



July 31, 1928.

H. KOPPERS COKE OVEN DOOR OPERATING APPARATUS Original Filed Aug. 31. 1921 2 Sheets-Sheet 1 July 31, 1928. 1,678,864

- H. KOPPERS COKE OVEN DOOR OPERATING APPARATUS Original File g. 31, 1921 2 Sheets$heet 2 STATES PATENT OFFICE.

HEINRICH KOPIERS, OF ESSEH-RUHR, GERMANY, ASSIGNORS TO THE KOPPERS DE- VELOPMENT CORPORATION, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

COKE OVEN-DOOR-OPERATING APPARATUS.

7 Application filed August 31, 1921, Serial No. 497,370, and in qermany November 19, 1920. Renewed.

0ctober'29, 1927. p v

Door lifting devices have also been built in,

which the door is seized by .a lever system and tangentially swung upward. This arrangement, however, has the disadvantage that the door is brought into positions other than those which it normally assumes during use. This results in exposing it on the one hand, to a greater extent to the effect of detrimental gases and vapors, and alsoin affecting the fireproof lining of the door.

The invention concerns a door lifting device for the customary coke oven doors lying flat in front of the chamber opening, and in particular for such as are made in accordance with the applicants German Letters Patent 516,701, by means of which the door is also seized and swung by a lever" mechanism. In order to make it possible, however, to retain permanently the vertical position of the door, the movement of the door is effected with the aid of a parallel link motion in such a way that the door is seized at two places by the lever mechanism and is then lifted upward parallel to itself and swung from out of the oven frame. Since in this arrangement the claws for lifting the door can be immediately brought into engagement with the door in the direction oft-he subse quent lifting movement, the claws can be used directly for releasing the door fastenings, by causing bolts rotatively attached to the door to be lifted out of their catches or strikes which are fastened to the oven frame.

In order to make the invention more clearly understood there are shown in the accompanying drawings means for carrying the same into practical effect, without limiting the invention to the details, which are illustrative and can be varied without depart ing from the invention. In said drawings Figure 1 is a side view of an oven'door opener embodying the invention.

Fig. 2 is an end view of the same, showing also in vertical section the mouth of the oven and the door in place.

Fig. 3 is a plan view of the same.

Fig. 4 is a front view of the door. On the frame Z) which is movable in front of the oven by means of motor a, the levers (565 are supported for rotation or swinging members associated with the supporting memher 9 and has spaced claws or door engaging links or arms M2. capable of engaging suitable ears or lugs ii in the door is, The upper lever arms or swinging means 03 are extended to form gears Z which are engaged by thepinions m driven by the motor a through gearing. On the door is the trap-like bolts 00 are arranged in such a way that they can pass crosswise behind strikes pp on the oven frame q'. Special cams m" of the bolt-s 0 project downward past the edge of the lugs or ears z. The support 9 is journaled in the levers d by means of eccentrics s in such a manner that it is possible to effect an adjustment with reference to the door, so that the exact setting of the distance can be made on the spot, this beingmade necessary ac cording to the distance between the rails of the moving frame 6, subject to slight varia tions, and the lugs 71. Once properlyadjusted, the eccentrics s are permanently set.

On swinging the support g upward from below, the claws or arms ML first strike under the cams W of the bolts 00 and unbolt the same. The claws or arms hihthen en: gage the lugs or ears ii of the door [a and,

moving on, by means of the upward and circular movement of the levers d and as the supporting member 9 is provided with spaced members 2 that rotatably bear in the apertures s of the swinging means (levers (Z), which apertures are in the same vertical plane, the -supporting member d is raised upward and outward and always is disposed in a vertical position by reason of the bearings sliding over the surface of the material around the apertures 8. Such arrangement of mechanism will lift the door and swing it upward and outward without the door meanwhile leaving its vertical position because of the spaced member 2 being rotatably supported in the apertures s in the swinging means. The support 9 serves as an intermediate element in order to smoothly carry out the necessary turning which would be impracticable at the places where, the claws -h/t go into action. With the doorlilted and swung out of the oven frame (1, the frame Z) and whole device can then be moved aside in order thus to completely eX- pose the chamber opening. The closing is accomplished in reverse order, in which operation, as soon as the claws 7th are no longer in engagement with them, the bolts 00 automatically drop into place again behind the strikes p.

lVh'at is claimed is- V V 1. A device for operating. the doors of coke ovens having in combination: a supporting member; spaced arms thereon for engaging said doors; means for swinging said supporting member; spaced members associated with said support for rotatably bearing in said swinging means.

2. A device for operating the doors of coke ovens having in combination: a plurality of arms engaging said doors; means for lifting said arms, said arms being rotatably supported on said means.

3. A device foroperating the doors or coke ovens having in combination: upper and lower operating levers; a supporting member rotatably bearing in said levers; horizontally extended lifting arms carried by said supporting member and adapted to engage;the"upper and lowerportions of the door. 1

4:. A door operating device having in combination: upper and lower operating levers; eccentrics therein; a supporting member; means rotatably supportingsaid supporting member in said eccentrics; upper and lower arms extending horizontally from said supporting member and carried thereby; said arms being adapted to hold said door in vertical position and againstirotary movement.

5. A door operating dev'icehaving in combination: spacedupper and lower operating levers; links connecting said levers, said links moving the lower lever upon rotation of the upper leve'; the upper levers having gears thereon; means engaging said gears for rotating said upper lever; a door supporting member rotatably bearing in said upper and lower levers; and means extending horizontally from-said supporting memher for engagement with the door, said supporting member and said last mentioned means maintaining said door in vertical position during the operating movement.-

6.1n a oven door opener; the combina= tion of upper and lower door-engaging vices adapted to removably engage the door, means for swinging said device's simultaneous ly on upward and outward arcs to break the door seal and remove the door from the oven, and meansfor maintaining the door in vertical position during such operation.

7. In an oven door opener, the combination ofupper and lower doorengaging devices adapted to removably grip the door,"

means forswinging said devices on-upward and outward arcs to remove thedoor from the' oven, means for maintaining the door in vertical position during such operation, andmeans for adjusting the door-engaging devices inward and outward relative to the swinging means and to the door-lugsztor proper engagement with the latter preliminary to the removing operation.

8. In an oven door opener, the combination of upper and lower door-engaging devices, means for swinging said. dev'iceson upward and outward arcs to remove the door from-the oven, and means for maintaining the door in vertical position during such operation, said door-engaging devices having means for" releasing the door-bolts as they -move to engage the door-lugs;

HEINRICH KOPPERS. 

